Suction apparatus.



L. ISAAGS. sUoTIoN APPARATUS. APPLIUATION FILED AUG. 26, 1911.

Patented July 2, i912.

NVENTOR m S S E m I. W

LUS 18A-AGS, AUE LOUISVLIJE, KENTUCKY.;

suction APPARATUS;

inst

Specification of Letters Etent.'

Application ledeugust QG, i911. SeriaiNc. 646.18%.

i To ali zu/tom zt may concerns I Be it known that l, Louis Isaacs, a citizeni I of the United States, residing at Louisville? in the county of Jefferson and State of Ken-l Lucky, have invented certain new andusetul improvements in Suction.. pparautus,l ot which the following is a specication. i

yThis invention relates to apparatus for ,re-l moving dust and dirt by suction, and inorel particularly to the outlet end of said apparatus. Y I

.lt is the object of the invention to provide a novel and improved suction fan, and a re-l ccptacle into which the fan discharges thelf dust and dirt sucked upA `The `fan blades aref so arranged that rubbish can readily enter and pass the fan, and the blades are alsoE made adjustable so that the dischargingE4 blow inay be reduced or modified. lith these and other objects 1n View as.` will appear whenthe natureo the linvention is better understood., the saine consists'inra .nowllconstructiman@ arrangement at parts to be hereinafter described and claimed. In the'aecoinpanying drawing, Figure 1 is 'a vert-ical section of the invention, and Fig.

2 is a cross-section on the line 2-2 of Fig. 1. Referring speclcally to the drawing, 5

denotes a suction tube,lto one end Qfwhich is connected a suitable nozzle, which latter is carried across'the'parts to Ice cleaned,I and which sucks up the dustgand dirt in any. ordinary pneumatic cleaning ap; a`ratus.A Thernozzle forinsvn'o part Nof thevpresent in- .ve'xlitiolnand as itis .common in the art, it

l'lhe outletuvof the fan casing is-located in close proximity to an' inletopening 10 in the top 8 of the casing 7 into which latter the dust, dirt,.etc., is discharged Vby thev tan.

Within the casing 9 is located a fan coinprising a hub 11 and loladesl)J 4.c arriedthere by. The hub is hollow and conical., and is lcarried by a spider 13 which is made fastlto a Shaft'lL which passes centrally through the casingand the hub.- lhe` shaft passes through the bend 6 and'on the outside there of is supported by suitable. bearings, and is Patented J ulg, 1912,

titted with a pulley llwhichfisbelted toaJ suitable sourceof power foidrivingfthe fan. rlhe hub 1l is concentric with the cas1ng`9', and' the outer edges of the `blades',arejslanting so as to ,describe a path which is concenvtric to the'casing and the hub` The blades carry extensions-1G which are securedltoft-he blades by screws or other Isuitable `taster means 17 whichfpass through' slots 13N-'ri blades, thi-1t' tlie w.teiisiox1s 1nay`be"adthe -outlet end ot the casing 9.

In the opening 10 is mounted whichextends into the casing 7 and into the mouth of whiclrhoppcrthe outlet end `oli the c: sing,l 9 extends'a short distance. The wall annular series of perforations- 19, the urposeot which will be presently described).v

In thcicasing. 7, clese; tothetopftherent, usa. shelt 20 having ay central opening' 21 Ate aeeennnodate the lower or discharge end justedt'or a. purpose to be presentlyiliade` :clean The slots -run in thedirection of the i length of vthe extensions and they may there- 4 vtore he adjusted to project n iore or less from aliop'per 18 y ,of the casing 9, close toits outlet end, l1asl an l' l of the` hopper 18. This shelf is perforated n as indicated at 22, and it slopes toward its central opening 21. lilithin the casing` Tis mounted a receptacle into which the dirt, dust,.etc., is discharged, a11d\vl 1en-ull:.tl1e

.receptacle may be removed through-a: door 24 and emptied.

There is a space between the edge' dust collecting onthc shelf-,may work down to the op'enin 2,1l and drop-through the saine into the receptacle 23. The shelf-is perforated to permit air to pass there through. vThe top 8" will be some suitably ineshed fabric to perinit the iree escape of air troni the casing 7, but to retain the dust.

The pcri'orations 19 are covered with a sheet 25 oi dustprooitl fabric?. p

By the conical shape ofthe fan and its casing the centrifugal :torce throws the air against the casing),A wall whereby it is deflecled downward, 'and the con' vial hub prevents any air -from getting' into the fan' troni below.A Consequently, all the air must(v enter atthe. inlet end of the casing, thus `'n- ,creasin v the suction as thereis no confusion different action for of currents. By adjusting the fan blade eX- tensions to project from the nnperforate portion of the fan casing more or less, the

- the perforations 19. rlhe purpose of reducing the blow is that after the dirt reaches the'hopper 18 a strong' blast isA no longer necessary, it being desirable that the dirtdrop into the hopper as much aspossible by gravity. The extensions 16 are only adjusted to slide beyond the iinp'erforate portion of the casing and not below the pei'- forated portion. i The perforations, as already stated, allow some off tl thrown air to escape, but the dirt is deflected downward and drops into the hopper.' By making the extensions adjustable itis possible to modify the hereinl described ac tion, which is desirable as it may require a some streets according to the nature of the surface thereof, and the different kinds of material fnn'd in difterent'parts of the city, and also for a somewhat diiferent action when snow is 'to be handled. The farther the extensions p'roject the more radial currents are produced, and consequently, the effect is increased or e 'radially' reduced according to the'extent the ext-ensions project into the perforated 4portion of the casing. I claim:

1. The combination with a conical casing having,l an axial discharge opening, of a fan in saidcasing comprising a ,conical hub and blades carr-ied by the ing a perforated Wall at its discharge .end into which the blades project.

2. The coi'nbination with of a fan therein comprising a conical hub and blades'adjustably secured to the hub,`

said casinpI having' a perforated wall at its discharge end, and the blades being adjust- .able to extend into said perforated portion of the casing.

.3. T11n combination with aconical casing, of a fa 'therein comprising a'conical hub and blades carried by th'e l1nb.'said casinxohaving aperforated Wall at its discharge end, and e) 'ensions carried by the blades and projecting into the perforated portion of the casing. lntestinlony whereof I aliix my signature in presence of two witnesses.

LOUIS TSAACS, lVitnesses:

S. M. SariNsiiY, CARI, J. CRoUoIr.

hub, said casing hav-- a conical casing, 

